8398c9048d
code was modified slightly, so the code differs from the original downloadable 1.9.5 version
173 lines
5.4 KiB
JavaScript
173 lines
5.4 KiB
JavaScript
dojo.provide("dojox.encoding.digests.MD5");
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dojo.require("dojox.encoding.digests._base");
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/* A port of Paul Johnstone's MD5 implementation
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* http://pajhome.org.uk/crypt/md5/index.html
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*
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* Copyright (C) Paul Johnston 1999 - 2002.
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* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
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* Distributed under the BSD License
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*
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* Dojo port by Tom Trenka
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*/
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(function(){
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var dxd=dojox.encoding.digests;
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var chrsz=8;
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// MD5 rounds functions
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function R(n,c){ return (n<<c)|(n>>>(32-c)); }
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function C(q,a,b,x,s,t){ return dxd.addWords(R(dxd.addWords(dxd.addWords(a, q), dxd.addWords(x, t)), s), b); }
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function FF(a,b,c,d,x,s,t){ return C((b&c)|((~b)&d),a,b,x,s,t); }
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function GG(a,b,c,d,x,s,t){ return C((b&d)|(c&(~d)),a,b,x,s,t); }
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function HH(a,b,c,d,x,s,t){ return C(b^c^d,a,b,x,s,t); }
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function II(a,b,c,d,x,s,t){ return C(c^(b|(~d)),a,b,x,s,t); }
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// the core MD5 rounds method
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function core(x,len){
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x[len>>5]|=0x80<<((len)%32);
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x[(((len+64)>>>9)<<4)+14]=len;
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var a= 1732584193;
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var b=-271733879;
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var c=-1732584194;
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var d= 271733878;
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for(var i=0; i<x.length; i+=16){
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var olda=a;
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var oldb=b;
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var oldc=c;
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var oldd=d;
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a=FF(a,b,c,d,x[i+ 0],7 ,-680876936);
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d=FF(d,a,b,c,x[i+ 1],12,-389564586);
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c=FF(c,d,a,b,x[i+ 2],17, 606105819);
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b=FF(b,c,d,a,x[i+ 3],22,-1044525330);
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a=FF(a,b,c,d,x[i+ 4],7 ,-176418897);
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d=FF(d,a,b,c,x[i+ 5],12, 1200080426);
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c=FF(c,d,a,b,x[i+ 6],17,-1473231341);
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b=FF(b,c,d,a,x[i+ 7],22,-45705983);
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a=FF(a,b,c,d,x[i+ 8],7 , 1770035416);
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d=FF(d,a,b,c,x[i+ 9],12,-1958414417);
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c=FF(c,d,a,b,x[i+10],17,-42063);
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b=FF(b,c,d,a,x[i+11],22,-1990404162);
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a=FF(a,b,c,d,x[i+12],7 , 1804603682);
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d=FF(d,a,b,c,x[i+13],12,-40341101);
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c=FF(c,d,a,b,x[i+14],17,-1502002290);
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b=FF(b,c,d,a,x[i+15],22, 1236535329);
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a=GG(a,b,c,d,x[i+ 1],5 ,-165796510);
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d=GG(d,a,b,c,x[i+ 6],9 ,-1069501632);
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c=GG(c,d,a,b,x[i+11],14, 643717713);
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b=GG(b,c,d,a,x[i+ 0],20,-373897302);
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a=GG(a,b,c,d,x[i+ 5],5 ,-701558691);
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d=GG(d,a,b,c,x[i+10],9 , 38016083);
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c=GG(c,d,a,b,x[i+15],14,-660478335);
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b=GG(b,c,d,a,x[i+ 4],20,-405537848);
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a=GG(a,b,c,d,x[i+ 9],5 , 568446438);
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d=GG(d,a,b,c,x[i+14],9 ,-1019803690);
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c=GG(c,d,a,b,x[i+ 3],14,-187363961);
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b=GG(b,c,d,a,x[i+ 8],20, 1163531501);
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a=GG(a,b,c,d,x[i+13],5 ,-1444681467);
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d=GG(d,a,b,c,x[i+ 2],9 ,-51403784);
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c=GG(c,d,a,b,x[i+ 7],14, 1735328473);
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b=GG(b,c,d,a,x[i+12],20,-1926607734);
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a=HH(a,b,c,d,x[i+ 5],4 ,-378558);
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d=HH(d,a,b,c,x[i+ 8],11,-2022574463);
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c=HH(c,d,a,b,x[i+11],16, 1839030562);
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b=HH(b,c,d,a,x[i+14],23,-35309556);
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a=HH(a,b,c,d,x[i+ 1],4 ,-1530992060);
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d=HH(d,a,b,c,x[i+ 4],11, 1272893353);
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c=HH(c,d,a,b,x[i+ 7],16,-155497632);
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b=HH(b,c,d,a,x[i+10],23,-1094730640);
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a=HH(a,b,c,d,x[i+13],4 , 681279174);
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d=HH(d,a,b,c,x[i+ 0],11,-358537222);
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c=HH(c,d,a,b,x[i+ 3],16,-722521979);
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b=HH(b,c,d,a,x[i+ 6],23, 76029189);
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a=HH(a,b,c,d,x[i+ 9],4 ,-640364487);
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d=HH(d,a,b,c,x[i+12],11,-421815835);
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c=HH(c,d,a,b,x[i+15],16, 530742520);
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b=HH(b,c,d,a,x[i+ 2],23,-995338651);
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a=II(a,b,c,d,x[i+ 0],6 ,-198630844);
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d=II(d,a,b,c,x[i+ 7],10, 1126891415);
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c=II(c,d,a,b,x[i+14],15,-1416354905);
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b=II(b,c,d,a,x[i+ 5],21,-57434055);
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a=II(a,b,c,d,x[i+12],6 , 1700485571);
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d=II(d,a,b,c,x[i+ 3],10,-1894986606);
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c=II(c,d,a,b,x[i+10],15,-1051523);
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b=II(b,c,d,a,x[i+ 1],21,-2054922799);
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a=II(a,b,c,d,x[i+ 8],6 , 1873313359);
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d=II(d,a,b,c,x[i+15],10,-30611744);
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c=II(c,d,a,b,x[i+ 6],15,-1560198380);
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b=II(b,c,d,a,x[i+13],21, 1309151649);
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a=II(a,b,c,d,x[i+ 4],6 ,-145523070);
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d=II(d,a,b,c,x[i+11],10,-1120210379);
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c=II(c,d,a,b,x[i+ 2],15, 718787259);
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b=II(b,c,d,a,x[i+ 9],21,-343485551);
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a=dxd.addWords(a, olda);
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b=dxd.addWords(b, oldb);
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c=dxd.addWords(c, oldc);
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d=dxd.addWords(d, oldd);
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}
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return [a,b,c,d];
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}
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function hmac(data, key){
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var wa=dxd.stringToWord(key);
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if(wa.length>16){
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wa=core(wa, key.length*chrsz);
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}
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var l=[], r=[];
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for(var i=0; i<16; i++){
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l[i]=wa[i]^0x36363636;
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r[i]=wa[i]^0x5c5c5c5c;
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}
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var h=core(l.concat(dxd.stringToWord(data)), 512+data.length*chrsz);
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return core(r.concat(h), 640);
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}
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// public function
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dxd.MD5=function(/* string */data, /* dojox.encoding.digests.outputTypes? */outputType){
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// summary
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// computes the digest of data, and returns the result according to type outputType
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var out=outputType || dxd.outputTypes.Base64;
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var wa=core(dxd.stringToWord(data), data.length*chrsz);
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switch(out){
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case dxd.outputTypes.Raw:{
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return wa; // word[]
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}
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case dxd.outputTypes.Hex:{
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return dxd.wordToHex(wa); // string
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}
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case dxd.outputTypes.String:{
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return dxd.wordToString(wa); // string
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}
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default:{
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return dxd.wordToBase64(wa); // string
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}
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}
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};
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// make this private, for later use with a generic HMAC calculator.
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dxd.MD5._hmac=function(/* string */data, /* string */key, /* dojox.encoding.digests.outputTypes? */outputType){
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// summary
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// computes the digest of data, and returns the result according to type outputType
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var out=outputType || dxd.outputTypes.Base64;
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var wa=hmac(data, key);
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switch(out){
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case dxd.outputTypes.Raw:{
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return wa; // word[]
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}
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case dxd.outputTypes.Hex:{
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return dxd.wordToHex(wa); // string
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}
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case dxd.outputTypes.String:{
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return dxd.wordToString(wa); // string
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}
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default:{
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return dxd.wordToBase64(wa); // string
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}
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}
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};
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})();
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